I bought a used guitar and the frets had some serious corrosion on them. These did a great job cleaning them up. It took four sheets, but the frets were in really bad shape. I used an eraser as a sanding block like a previous reviewer suggested -- great tip!

This product is amazing. I used it on my guitar and in 10 minutes I had amazing results. For the price you can't beat it. It's really easy to use and works great.

Bought this a while back and have used it during every string change. You'll get about 2-3 complete fret polishes per sheet. It will put the shine back into your frets, but it will NOT remove small scratches like steel wool will. However, anyone who has ever used steel wool will tell you it's a messy procedure. This is still a great product and will definitely clean even the dirtiest of frets. I have NOT used them on stainless steel frets though...

I've tried polishing my frets in the past, with everything from fine sandpaper to steel wool. This is all I will use from now on, works quickly and easily. You become an instant luthier!

I pulled my Spector bass out of its case for the first time in 10 years and the frets were literally corroded. I first thought about taking it to a shop for a grind and polish, but decided to try to save some money by cleaning the frets myself. I used all five of the polishing cloths to get the job done, but if you are just polishing up some dull frets, one cloth will likely do the trick. Remember, I was buffing away 10 years of neglect. I didn't use the fret slot thingie (two slots cut in the card-stock of the packaging) but I was working on a rosewood neck that needed some lemon-oil anyway. I also used a pink eraser (the big, rectangular kind) as a 'sanding block' and it made the 2+ hour process a lot easier.

Bottom line, my frets now gleam like new. For 6 bucks and some elbow grease, I was able to get results that would cost $50 or more at a guitar shop. I'm happy.